Enter IP address or hostname. We will check this internet address against a selected number of common public DNS-based blackhole lists (also called Multi-DNSBL or Multi-RBL check) to see if it is blacklisted as a public spam source.
It may take up to one minute for the program to check all lists in realtime and complete.
Please note: We do not maintain blacklists. These lists are not hosted on this server. We can not add or remove something to or from these lists.
We or these lists can not block any emails, but any mail server administrator can choose to make use of DNS blacklists to block spam.
If you found your ip address in blackhole lists, try to contact organizations maintaining these lists.

We have developed a realtime blacklist check solution. The checks run every 30 minutes. If your ip gets blacklisted, you will get a e-mail notification.
Use contact page to sign up and for pricing.